<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>CSS Colorful Glowing Liquid Glass</title>
  <link rel="stylesheet" href="style.css">
</head>

<body>
  <section>
    <div class="glass" style="--i: 1">
      <div class="inner">
        <div class="liquid"></div>
      </div>
    </div>

    <div class="glass" style="--i: 2">
      <div class="inner">
        <div class="liquid"></div>
      </div>
    </div>

    <div class="glass" style="--i: 3">
      <div class="inner">
        <div class="liquid"></div>
      </div>
    </div>
  </section>
</body>

</html>